Mold is a type of fungus that is present in our natural environment. Mold spores, which are tiny microscopic ‘seeds’, can be found virtually everywhere, including in homes, and are a part of the general dust found in homes. Health effects from exposure to mold can vary greatly depending on the person and the amount of mold in their home. The types of health symptoms that may occur include coughing, wheezing, nasal and throat conditions. People with asthma or allergies who are sensitive to mold may notice their asthma or allergy symptoms worsen. Individuals with severely weakened immune system who are exposed to moldy environments are at risk of developing serious fungal respiratory infections.

The following types of people may be affected more severely and sooner than others:

• infants and children
• elderly people
• individuals with respiratory conditions or sensitivities such as allergies or asthma
• persons having severely weakened immune systems (for example, people with HIV infection, chemotherapy patients, organ transplant recipients)
Those with special health concerns should consult a medical professional if they feel their health is affected by indoor mold.